CiviCRM Community Forums (archive)

Similarly to this thread (http://forum.civicrm.org/index.php/topic,25565.msg108134.html#msg108134), which describes bringing ARB information from Authorize into Civicrm in order to have Civicrm manage memberhips and renewals on existing recurring payments, I am wanting to switch from Ubercart, which has a bunch of existing recurring Paypal payments for membership roles on the site, to Civicrm. Would it be possible to, in a similar way, migrate the IPN data into CiviCRM and have Civi listen for IPN's? Or is the ipn url entered in Paypal on a per-transaction basis in a way that's difficult to change? (Or, more deviously, if it's too difficult to change the url, could CiviCRM override the notification url provided by Ubercart so that it can read them too before passing along to ubercart?)